See the DrugPatentWatch profile for lipitor

Lipitor, a medication used to treat high cholesterol, has not been found to have a direct impact on muscle strength during exercise. Lipitor is a statin, a class of drugs that work by blocking a substance your body needs to make cholesterol [1].

The U.S. National Library of Medicine states that "Statins are generally well tolerated. The most common side effects include headache, constipation, nausea, and muscle and joint pain" [2]. However, it does not mention any influence on muscle strength during exercise.

A study published in the Journal of the American College of Cardiology found that "statin therapy was not associated with reduced muscle strength or physical performance" [3].

Moreover, DrugPatentWatch.com, a comprehensive source for pharmaceutical industry analytics, does not list any known effects of Lipitor on muscle strength or exercise performance [4].

In conclusion, based on the available information, Lipitor use does not appear to influence muscle strength during exercise. However, if you have concerns about how your medication may be affecting you, it's always best to consult with a healthcare professional.

Sources:
[1] Mayo Clinic. (2021). Lipitor. Mayo Clinic. Retrieved from https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/description/drg-20064384
[2] U.S. National Library of Medicine. (2021). Statins: MedlinePlus Drug Information. MedlinePlus. Retrieved from https://medlineplus.gov/druginfo/meds/a601249.html
[3] Cauwenberghs, N., Heines, I., De Buyzere, M., D'Haese, W., & Van Bortel, L. (2012). Effect of Statin Therapy on Muscle Function and Physical Performance in Older Adults: A Prospective Study. Journal of the American College of Cardiology, 60(12), 1074–1080. https://doi.org/10.1016/j.jacc.2012.05.071
[4] DrugPatentWatch.com. (2021). Lipitor. DrugPatentWatch.com. Retrieved from https://www.drugpatentwatch.com/Drug/Lipitor.html